Lab Quiz: Heart Anatomy and Electrocardiography Flashcards
What is structure 22?
Apex
What is the strucuture located underneath the great veins?
The Base of the Heart
What is Structure 14?
Auricle of the Right Atrium
What is structure 16?
Auricle of the Left Atrium
What is structure 7?
Ligamentum Arteriosum
What is structure 12?
Left Atrium
What is structure 4?
Right Atrium
What is structure 7?
Right Ventricle
What is structure 15?
Left Ventricle
What is structure 1?
Superior Vena Cava
What is structure 8?
Pulmonary Trunk
What is structure 8?
Aorta
What is structure 1?
Brachiocephalic trunk
What is underneath structure 5?
Posterior interventricular sulcus
What is underneath structure 4?
Coronary Sulcus
What is underneath structure 18?
Anterior Interventriculuar Sulcus
What is the indentation in the right atrium called?
Fossa Ovalis
What are the muscles inside of the atria called?
Pectinate Muscles
What is structure 16?
Interventricular septum
What is structure 7?
Papillary Muscles
What are the muscles called that are lining the ventricles?
Trabeculae Carnae
What are the ends of the AV pumps called?
Chordae Tendineae
What is structure 3?
Pulmonary SL Pump
What is structure 13?
Aortic Valve
What is structure 6?
Tricuspid Valve
What is structure 14?
Bicuspid/Mitrial Valve
Where do the electrical impulses start?
In the Sinoatrial node.
Where do Electrical impulses go after they reach the sinoatrial node?
Atrioventricular node
Where do the impulses pause?
At the atrioventricular node.
The bundles of His are located where?
Introventricular septum
What is the subendocardial conducting network made of?
Purkinje fibers
What is structure 6?
P wave
What is interval 4?
QRS Complex
What is structure 9?
T wave
What happens before the P wave?
SA node generates impulse, atrial depolarization begins.
What happens on the P wave?
Impulse is delayed at the AV node. Atrial depolarization complete.
What happens during the Q wave?
Impulse passes to apex, ventricular depolarization begins.
What happens during the QRS complex?
Ventricular depolarization complete, impulse continues into Purkinje fibers.
What is an ECG?
An ECG shows a record of voltage and time through the heart. It shows the electrical impulse through the non-contractile cells.
